Sundance Pass Trail is a 18.8 mile moderately trafficked out and back trail located near Red Lodge, Montana that features a lake and is rated as difficult. The trail offers a number of activity options and is accessible from March until November.
Amazing views from the top of Sundance Pass. The wind is strong up there so bring a light jacket if you plan on sitting down for awhile. Had to hike through some snow drifts so prepare for wet boots, depending on the time of year. The trail is heavily hiked to Lost Lake and then its empty. This is also where the elevation gain starts. Absolutely brutal as a one day hike, start early in the day if you plan on doing it in one.
In 1988 (Year of the Yellowstone Fires) three of us hiked from the West Fork of Rock Creek over Sundance Pass down to Lake Fork of Rock Creek. Fairly tough hike for one day as is 21 miles starting at about 7,000 feet, going to about 10,400 feet and going down to about 7,000 feet. Most impressive part of hike is viewing Whitetail Peak at 12,548 feet above Sundance Pass. Trail is good, but has a lot of switchbacks. Very beautiful hike. It has some great camping spots especially in Quinnebaugh Meadows.